Guest Stars Leslie Silva as M.E. Ridenhour John Cariani as Otto Bahnhoff John Michael Higgins as Floyd Mayborne Silas Weir Mitchell as Darren Drew Thomas Kopache as Officer David Rees Snell as Herb Moore Sam Lloyd as Group Leader Jennifer Elise Cox as Hobbyist Laura Heisler as Cynthia Abbott Co Starring Larry Herron as Technician